UPD78320 Datasheet, PDF (69/88 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLER

tCYK DEPENDENT BUS TIMING DEFINITION
Parameter
tSAST
tHSTA
tDAR
tDAID
tDRID
tDSTR
tDRA
tWRL
tWSTH
tDAW
tDSTOD
tDSTW
tSODW
tHWOD
tDWST
tWWL
Expression
0.5T – 30
0.5T – 30
T – 40
(2.5 + n) T – 90
(1.5 + n) T – 75
0.5T – 20
0.5T – 12
(1.5 + n) T – 30
0.5T – 25
T – 40
0.5T + 40
0.5T – 20
1.5T – 40
0.5T – 30
0.5T – 20
(1.5 + n) T – 30
MIN./MAX.
MIN.
MIN.
MIN.
MAX.
MAX.
MIN.
MIN.
MIN.
MIN.
MIN.
MAX.
MIN.
MIN.
MIN.
MIN.
MIN.
Remarks 1. T = tCYK = 1/fCLK (fCLK is an internal system clock frequency)
2. n indicates the number of wait cycles defined by user software.
3. Depends on tCYK for the bus timing shown in this table only.
µPD78320, 78322
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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